CN1149903C - Starter circuit - Google Patents
Starter circuit Download PDFInfo
- Publication number
- CN1149903C CN1149903C CNB998004863A CN99800486A CN1149903C CN 1149903 C CN1149903 C CN 1149903C CN B998004863 A CNB998004863 A CN B998004863A CN 99800486 A CN99800486 A CN 99800486A CN 1149903 C CN1149903 C CN 1149903C
- Authority
- CN
- China
- Prior art keywords
- safety switch
- switch
- starting circuit
- circuit
- safety
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
- H05B41/02—Details
- H05B41/04—Starting switches
- H05B41/06—Starting switches thermal only
- H05B41/08—Starting switches thermal only heated by glow discharge
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- Discharge Lamps And Accessories Thereof (AREA)
- Circuit Arrangements For Discharge Lamps (AREA)
- Thermally Actuated Switches (AREA)
Abstract
A start circuit (1) of the invention comprises a series connection of a glow switch (10) and a safety switch (12). The glow switch (10) and the safety switch (12) are each provided with an enclosed space (10a, 12a), with a pair of current conductors (10b, 10c; 12b, 12c) which enter the enclosed space and with a bimetallic element (10e, 12e) which is arranged in the enclosed space and which is connected with one (10c; 12c) of the current supply connectors. The enclosed space (10a) of the glow switch (10) is provided with an ionisable filling. The glow switch (10) is opened in cold state. The safety switch is closed in cold state. The start circuit (1) comprises a heat source (11) for opening the safety switch (12). The start circuit further comprises a heat source for keeping the safety switch (12) opened. The start circuit (1) of the invention is characterised in that the heat source for keeping the safety switch (12) opened is formed by an ionisable filling in the enclosed space (12a) of the safety switch (12).
Description
Technical field
The present invention relates to a kind of starting circuit that comprises the cascaded structure of a heating switch and a safety switch, the heating switch of this circuit and safety switch respectively have an enclosure space, the a pair of Ampereconductors that extend into enclosure space separately be installed in confined space in and the bimetallic element that links to each other with one of them conductor, be provided with ionizable fill in the confined space of heating switch, the heating switch disconnects under cold conditions, and safety switch is closed under cold conditions, and this starting circuit also comprises a thermal source and a thermal source that is used to keep the safety switch disconnection that is used to make the safety switch disconnection in addition.
Background technology
Such starting circuit is that DE815365 is known.Heating switch and safety switch thermal coupling each other for this purpose.The resistance of bypass safety switch is used to the thermal source that keeps safety switch to open.
But this known starting circuit is used to ignite and has the low-pressure discharge lamp of preheating electrode.The known starting circuit that is used for this purpose constitutes to be made low-pressure discharge lamp be in series with the inductance with splicing ear and makes this starting circuit rely the bypass discharge lamp and the part of the circuit of connecting with electrode.
When splicing ear linked to each other with a power supply, the heating switch alternately entered and disconnects and closure state.At closure state, an electric current flows through electrode through starting circuit.This electric current makes the electrode of discharge lamp reach a higher temperature, the electronics emission that this temperature is enough to that discharge lamp is produced ignites.
The electric current by electrode for discharge lamp has been cut off in conversion from the closure state to the off-state, thereby makes the inductance element of connecting with lamp produce an ignitor supply pulse.As cause two electric discharge between electrodes in this ignitor supply pulse at discharge lamp, then this voltage drop on the discharge lamp gets very fast, thereby the voltage between two Ampereconductors of heating switch also falls very soon, to cause the heating switch to remain on off-state, contact between two Ampereconductors and heating switch rest on off-state.
Operation still can not make in the low-pressure discharge lamp and discharge if ignite repeatedly, and then owing to safety switch and the thermal coupling of heating switch, safety switch is heated to the degree of the bimetallic element bending that can make safety switch.This will make safety switch present open-circuit condition.Its result, electric current will begin to flow through the impedance of bypass safety switch.The heat that produces in this impedance makes safety switch be in open-circuit condition, so that can not further produce firing pulse.Thus the shortcoming of being brought be make safety switch from enter closure state behind deenergization once more institute's elapsed time, promptly below so-called recovery time become longer, this makes and is determined to the end is should change lamp or the difficulty of other fault becomes big.
Summary of the invention
The purpose of this invention is to provide a kind of the sort of starting circuit described in that section of beginning, this circuit has relatively shorter recovery time.
According to the present invention, be characterised in that in the sort of starting circuit of beginning that section description for this purpose: the thermal source that is used for keeping the safety switch open circuit is made of the ionogenic filler at the confined space of safety switch; And be used to make the thermal source of safety switch open circuit to be and the bimetal leaf thermal coupling of safety switch and the impedance component of connecting with the heating switch.The ionizable fill matter of safety switch is the mixture of for example a kind of inert gas or inert gas, when being the filler of heating switch, it for example is the mixture of a kind of inert gas Ne and Xe, Ne95Xe5 (mole%) for example, the mixture of Ne99Xe1 or for example a kind of inert gas Ne and Ar, for example Ne99Ar1 or Ne25Ar75.Stuffing pressure can be between from 10 to 100mbar.
When the lamp firing failure, the thermal source of safety switch open circuit is caused when safety switch is opened a way, will between two Ampereconductors of safety switch, produce glow discharge.The heat that produces when glow discharge makes the bimetallic element of safety switch be in open-circuit condition.Because the thermal capacity of the ionizable fill matter of safety switch is compared with an impedor thermal capacity and is disregarded to omitting for a short time, so the bimetallic element of safety switch turns cold soon behind dump.
Being used to make the thermal source of safety switch open circuit for example is the heating switch, in the case, and heating switch and safety switch thermal coupling.Can for example be fixed to this impedance component on the safety switch for strengthening this coupling by heat-conducting glue or metal tape, a this impedance component preferably source resistance device (for example wirewound resistor) length of safety switch open circuit moment when lamp breaks down can be easy to select by this impedor resistance value, in practice, this resistance value will be between 5 to 100 ohm.
In a desirable embodiment, the heating switch is by a branch road bypass of being made up of a reactance component.Can make the voltage of the glow discharge between two Ampereconductors that keep safety switch higher whereby.This will make selects the scope of safety switch wideer.
This reactance component is a capacitive reactive element preferably, so that the switching of the switch that prevents to generate heat is malfunctioning.This route capacitive reactive element and impedor cascaded structure are desirable.This impedance has limited the electric current by capacitive reactance, so as not make this electric current unnecessary impose on the heating switch starting capacitive reactance and Ampereconductors on.
Different with the heating switch, safety switch is closed under cold conditions.Except that this difference, safety switch can be by realizing at heating field of switches commonly used technology and the material be familiar with present technique field personnel.
Illustrate in greater detail the above-mentioned of starting circuit of the present invention and other aspect below in conjunction with accompanying drawing.
Description of drawings
Fig. 1 schematically illustrates a kind of circuit structure with a starting circuit.
Fig. 2 shows first embodiment of starting circuit of the present invention.
It is the temperature funtion of independent variable with time that Fig. 3 shows as one.
Fig. 4 shows the second embodiment of the present invention.
Embodiment
Fig. 1 shows a circuit structure that includes inductive reactive element b, discharge lamp c and starting circuit 1.This circuit structure is useful on input terminal a1, the a2 that links to each other with a power supply (for example local transmission network).Discharge lamp C links to each other with input terminal a1, a2, inductive reactive element b be connected one of these two inputs (being a2 in the drawings) and the electrode d2 that links to each other with lamp between.Starting circuit 1 bypass lamp c also is in series with the electrode d1 and the d2 that are connected on the lamp.
In Fig. 2, illustrate in greater detail first embodiment of starting circuit 1 of the present invention.Starting circuit 1 is a cascaded structure, and this cascaded structure is composed in series by heating switch 10, impedance component 11 and safety switch 12 in turn.Heating switch 10 and safety switch 12 each have a space 10a and a 12a who is surrounded by shell 10d respectively.The shell 10d that a pair of Ampereconductors 10b, 10c pass heating switch 10 enters enclosure space 10a.The bimetallic element 10e that (is 10c at this) links to each other one of among a pair of and Ampereconductors 10b, the 10c is installed in the enclosure space 10a of heating switch 10.Bimetallic element 10e has a master end and the passive side of being made by the Ni36Fe64 material made by Ni20Fe74Mn6 (percentage by weight) material, and passive side is towards another Ampereconductors 10b.Heating switch 10 is opened a way under cold conditions.The confined space 10a of heating switch 10 is filled with ionisable substance, and stuffing pressure is the Ar75Ne25 (mole %) of 35mbar in this example.A pair of Ampereconductors 12b, 12c pass the safety switch shell and enter confined space 12a, one with Ampereconductors 12b, 12c in one of (is 12c at this) bimetal leaf 12e of linking to each other be installed in the confined space 12a of safety switch 12.The bimetal leaf 12e of safety switch 12 also has the master end and the passive side that is made of the Ni36Fe64 material that are made of Ni20Fe74Mn6 (percentage by weight), but the master end of safety switch 12 is towards another Ampereconductors 12b.Safety switch 12 in the present embodiment is closed under cold conditions.Starting circuit 1 also comprises a thermal source that is used to disconnect safety switch and is made of the impedance component 11 that is in series with heating switch 10.Impedance component 11 is that 12 ohm wire-wound resistor constitutes by for example resistance value.Impedance part 11 is by radiation and conduction and safety switch 12 thermal couplings.In order to strengthen this thermal coupling, and impedance component 11 is fixed on the safety switch 12 by heat-conducting glue 14.
Starting circuit 1 also comprises a thermal source that is used to make safety switch 12 open circuits.According to the present invention, this thermal source constitutes by fill ionisable substance in the confined space 12a of safety switch 12, and in this example, filler is that stuffing pressure is the Ne90Ar10 (mole %) of 60mbar.
As follows according to starting circuit operation of the present invention: heating switch 10 disconnects and safety switch 12 closures under cold conditions.When this circuit structure is connected, between Ampereconductors 10b, the 10c in the confined space 10a of heating switch 10 glow discharge takes place.The bimetallic element 10e of this glow discharge heater switch 10.The bimetallic element 10e that links to each other with Ampereconductors 10c is heated under the effect of above-mentioned heating effect.Thereby bimetallic element 10e is contacted with reactance conductor 10b.The discharge of heating switch is stopped, and electric current will flow through electrode d1 and d2 in the discharge lamp c, flow through the impedance component 11 and the inductive reactive element b of starting circuit 1 again.This electric current is heated to the electrode d1 of discharge lamp c and d2 to make can normally the ignite temperature of electric current of enough emissions of required generation of discharge lamp.After glow discharge was extinguished in heating switch 10, the bimetallic element 10e of heating switch 10 cooled down, and made heating switch 10 become open mode owing to deforming.The result makes the current interruptions by lamp c, and inductive reactive element produces an ignitor supply pulse.If owing to this ignitor supply pulse lamp c is ignited, the switch that then generates heat will still be in off-state.If lamp c firing failure, then glow discharge will take place between two Ampereconductors 10b, 10c of heating switch 10 again, and wherein heating electrode d1 and d2 and the process that produces an ignitor supply pulse will automatically repeat.The electric current that produces heat be in impedance component 11 owing to electric current flow through in the time interval after switch 10 closures of generating heat causes.Bimetal leaf 12e with the safety switch 12 of impedance component 11 thermal couplings is heated whereby.
At Fig. 3, curve A shows the wall temperature TW of safety switch 12 and the foregoing circuit structure is connected back institute elapsed time functional relation, and the wall temperature TW in example shown in Fig. 3 is firing failure that part of up to 110 ℃ at lamp C of t1 (1.2 minutes) constantly.Make the bimetallic element 12e distortion of safety switch reach the degree that makes safety switch 12 become open-circuit condition.Along with safety switch becomes open-circuit condition, glow discharge will produce between Ampereconductors 12b and 12c.This glow discharge is flow through capacitive reactive element 13 by one and then may be kept by the electric current of heating switch 10 and impedance component 11.Glow discharge in the confined space 12a of safety switch 12 discharges and keeps the heat of safety switch at open-circuit condition, so that no longer produce the ignitor supply pulse.Along with safety switch is in off-state, on impedance component 11, no longer produce any heat, so that wall temperature TW in a few minutes, drop to about lower temperature 45 degree.
In the known starting circuit of DE815365, select according to the requirement that can discharge at the filler of the confined space of safety switch.In this known starting circuit, make the external heat source of safety switch open circuit with an impedance component conduct, behind the safety switch open circuit, also keep this than higher wall temperature TW (seeing Fig. 3 curve B), before safety switch was cooled to be enough to present the degree of closure state again, this circuit structure will spend the long time after disconnecting.
In starting circuit of the present invention, compare with above-mentioned known starting circuit, keep this closure state by making the ionizable fill glow discharge in the confined space 12 at safety switch after disconnecting at safety switch.When safety switch disconnected, the parts of safety switch 12 outsides also can be along with cooling down.Therefore the recovery time of starting circuit of the present invention is shorter.
Start and supply with in the circuit structure of the quite low rated power supply of low pressure glow discharge lamp if the starting circuit described in Fig. 2 is used in one, then must have a impedance component 11 than higher resistance value in order to produce safety switch 12 required enough heats.In the embodiment of Fig. 2, can not reduce inhibitory action than higher resistance to the interference of capacitive reactive element 13, particularly under the situation of the humorous wave height of supply voltage, this point will be paid special attention to.Yet the reactance component 11 that this adverse effect has than higher reactance value in the embodiment of Fig. 4 exists under situation really.For this reason, in the embodiment of Fig. 4, only under having the situation of lower resistance value, could realize satisfactorily reactance component 11.
Have with those corresponding parts among Fig. 2 and to add 100 reference number.In Fig. 4, heating switch 110 is by the branch road bypass of only being made up of a capacitive reactive element 113.It is attractive that the embodiment of Fig. 4 uses in the more lower powered circuit structure of starting and supply low-voltage discharge lamp.In this embodiment, being used to make the thermal source of safety switch open circuit also is an impedance component 111.Yet 110 facts by capacitive reactive element 113 bypasses of heating switch mean that impedance component 111 can have one than higher resistance, but can not reduce the inhibitory action to the interference of capacitive reactive element 113.
Claims (5)
1. a starting circuit (1), this starting circuit is made up of the cascaded structure of a heating switch (10) and a safety switch (12), and described heating switch and safety switch each have an airtight space (10a), (12a), extend into a pair of Ampereconductors (10b, 10c in each confined space respectively; 12b, 12c) with the bimetallic element (10e, 12e) that is configured in the above-mentioned confined space and links to each other with one of described Ampereconductors (10c, 12c), be provided with ionizable fill in the confined space (10a) of described heating switch (10), heating switch (10) is opened a way under cold conditions, and safety switch (12) is closed under cold conditions, this starting circuit (1) also comprises the thermal source (11) and the thermal source that keeps safety switch (12) open circuit that are used to make safety switch (12) open circuit
It is characterized in that: the thermal source that is used for keeping the safety switch open circuit is made of the ionizable fill at the confined space (12a) of safety switch (12); And be used to make the thermal source of safety switch (12) open circuit to be and bimetal leaf (12e) thermal coupling of safety switch (12) and the impedance component (11) of connecting with heating switch (10).
2. starting circuit as claimed in claim 1 is characterized in that: described heating switch (10) is by the branch road institute bypass of being made up of a reactance component (13).
3. starting circuit as claimed in claim 2 is characterized in that: described reactance component is a capacitive reactive element (13).
4. starting circuit as claimed in claim 1 is characterized in that: the branch road institute bypass that the cascaded structure that described heating switch (10) is made up of capacitive reactive element (13) and impedance component (11) forms.
5. starting circuit as claimed in claim 3 is characterized in that: described branch road only is made up of a capacitive reactive element (113).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP98201237.9 | 1998-04-17 | ||
| EP98201237 | 1998-04-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1263686A CN1263686A (en) | 2000-08-16 |
| CN1149903C true CN1149903C (en) | 2004-05-12 |
Family
ID=8233611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB998004863A Expired - Fee Related CN1149903C (en) | 1998-04-17 | 1999-04-06 | Starter circuit |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US6194846B1 (en) |
| EP (1) | EP0990374B1 (en) |
| JP (1) | JP2002505802A (en) |
| CN (1) | CN1149903C (en) |
| DE (1) | DE69918628T2 (en) |
| WO (1) | WO1999055123A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19947241A1 (en) * | 1999-09-30 | 2001-04-12 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Glow starter |
| JP2002190281A (en) * | 2000-12-22 | 2002-07-05 | Matsushita Electric Ind Co Ltd | High-pressure discharge lamp |
| US7132800B2 (en) * | 2001-11-15 | 2006-11-07 | Koninklijke Philips Electronics, N.V. | High-pressure discharge lamp |
| WO2006090319A1 (en) * | 2005-02-28 | 2006-08-31 | Koninklijke Philips Electronics N.V. | Glow-switch starter, lighting device and lighting system therewith, and use thereof |
| JP2009537942A (en) * | 2006-05-15 | 2009-10-29 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | Safe starter |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2464748A (en) * | 1945-06-14 | 1949-03-15 | Bryant Electric Co | Glow starting relay for fluorescent lamps |
| DE815365C (en) * | 1948-08-07 | 1951-10-01 | Philips Nv | Ignition device for gas and / or vapor discharge tubes |
| US3161746A (en) * | 1963-01-21 | 1964-12-15 | Gen Electric | Fluorescent lamp starter including a glow switch contiguous and thermally connectred o a thermal switch |
| KR910009146B1 (en) * | 1989-01-24 | 1991-10-31 | 정영춘 | Apparatus for discharge lamp |
| JP2814833B2 (en) * | 1992-04-10 | 1998-10-27 | 岩崎電気株式会社 | High pressure steam discharge lamp with built-in starter |
| US5886481A (en) * | 1997-05-15 | 1999-03-23 | Hubbell Incorporated | Reduced duty cycle high intensity discharge lamp ignitor |
-
1999
- 1999-04-06 JP JP55266899A patent/JP2002505802A/en not_active Withdrawn
- 1999-04-06 CN CNB998004863A patent/CN1149903C/en not_active Expired - Fee Related
- 1999-04-06 WO PCT/IB1999/000582 patent/WO1999055123A1/en active IP Right Grant
- 1999-04-06 EP EP99909151A patent/EP0990374B1/en not_active Expired - Lifetime
- 1999-04-06 DE DE69918628T patent/DE69918628T2/en not_active Expired - Fee Related
- 1999-04-08 US US09/288,397 patent/US6194846B1/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| US6194846B1 (en) | 2001-02-27 |
| DE69918628T2 (en) | 2005-07-21 |
| WO1999055123A1 (en) | 1999-10-28 |
| EP0990374A1 (en) | 2000-04-05 |
| EP0990374B1 (en) | 2004-07-14 |
| DE69918628D1 (en) | 2004-08-19 |
| JP2002505802A (en) | 2002-02-19 |
| CN1263686A (en) | 2000-08-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |